How do I allow internal email only users to forward to the Gmail test domain?

Hello,
We have Exchange 2003 with a group of users who are limited to internal email only. We enabled this limitation by adding the users to an AD group, then placing the group in Delivery Restrictions \ "Reject messages from" located in the properties of Routing Groups \ First Routing Group \ Connectors \ Internet Mail SMTP Connector. This works great and does what we need to do. Here's the complication. We are in the process of testing Google Apps using dual delivery configured on the Exchange server. Now when a restricted user sends an email to a Gmail Test user, they get a reply email saying they don't have permission to send to the user. How can I allow the restricted users to send to the gmail test domain without setting the error email? (mydomain.com.test-google-a.com)

1. Open Microsoft Exchange System Manager.
2. In the left-hand menu, right-click Connectors. (May need to expand Routing Groups depending on your view.)
3. Select New and then select SMTP Connector
4. In the Properties window, type in example name Google Connector in the Name field
5. Within the Local Bridgeheads section, click Add.
6. The Add Bridgehead dialog box displays. Select the server [Default SMTP Virtual Server?] in which you would like to name the bridgehead, from within the list. Click OK to close the dialog box.
7. In the Properties window, click the Address Space tab.
8. Select SMTP in the resulting Add Address Space dialog box. Click OK.
9. Type google.com or gmail.com etc in the Email Domain field, in the Internet Address Space Properties dialog box. Type 1 in the Cost field. Click OK to close the dialog box. The key here is to ensure the Cost for this connector is lower then the Cost of the other connectors, so it will use the non-restrictions here and send out via this connector.
10. Restart SMTP Service to ensure new Connector takes effect

OK. I created the connector and set the Address Space domain to the Gmail test domain. My test account was able to send to a gmail pilot test user without getting the access denied email. I have asked my regular restricted user to run the same test and I will let you know. It looks good so far.
Thanks for your help.

Featured Post

Do you feel like you are constantly making changes to email signatures? Are the images not formatting how you want them to? Want high-quality HTML signatures on all devices, including on mobiles and Macs? Then, let Exclaimer solve all your email signature problems today.

In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Mail Flow >> Ac…

To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it.
The vast majority of email clients display l…